//
// Created by wze-zero on 2024/7/20 020.
//
#include <iostream>

using namespace std;

class Base {

private:
    int x;
    int y;

public:
    Base(int x, int y) {
        this->x = x;
        this->y = y;
    }

    int getX() {
        return x;
    }

    int getY() {
        return y;
    }

    void calculate() {
        cout << getX() * getY() << endl;
    }

};

class Sub : public Base {
public:
    Sub(int x, int y) : Base(x, y) {

    }

    void calculate() {
        if (this->getY() == 0) {
            cout << "Error" << endl;
        } else {
            cout << this->getX() / this->getY() << endl;
        }
    }
};

int main() {
    int x, y, z;
    cin >> x;
    cin >> y;
    Sub sub(x, y);
    sub.calculate();
    return 0;
}